Answer: I think I recently answered your question, but without knowing about the honeysuckle. Based on your description, I am assuming this is in a sunny location. If the honeysuckle and boxwood are very far apart, you might plant daylilies (Hemerocallis) in between them.
If this is a honeysuckle shrub, it will grow quite large. If this is a vining honeysuckle, it too will cover quite a large space by scrambling outward. When you plant, make sure there is enough room for the perennials to grow and thrive without being swamped by the shrubs/vines.
Also, keep your perennials far away from the boxwoods to avoid crowding or damaging the boxwood roots when you plant -- and as they grow and mature. (Boxwoods are very shallow rooted and have roots that spread out well beyond their branches.)
Boxwoods are an investment in time and well worth nurturing. I hope your planting does well for you.
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